Pillow-block for shafts



U ITED STATES PATENT OFFICE.

IRVING M. SCOTT, OF:SANFBANGISOO, CALIFORNIA.

V-PILLOVW-BLOCK FOR SHAFTS.

SPECIFICATION forming part" of Letters retentive. 244,489, dated July 19, 1881,

Application filed May 19,1881. (No model.)

To all whom it may concern:

Be it known that I, IRVING M. Soocrrr, of the city and county of San Francisco, State of Cali fornia, have invented an Improvement in Pillow-Blocks for Shafts; and I hereby declare the in pillow-blocks forheavy shafting; and it consists in anovel method. of adjusting and regulatin g the set of the bearing-brasses by the use of horizontally-inclined wedges and faces with suitable actuating-screws, all operating independently of the cap, which may thus be removed without disturbing the brasses or the set of the shaft, as will be morefull y explained by reference to the accompanying drawings, in Which Figure 1 is a vertical section transverse to the axle. Fig. 2 is a horizontal section. Fig. 3 is a perspective view of one of the side brasses.

A is the base of the pillow-block, which is made of proper form and strength, and having bolt-holes through the extension of the base, so that it may be properly secured in place.

B is the cap, and O is the lower brass, upon which the shaft rests.

D D are the side brasses, which are made to adjust to or from the shaft, and these, with the cap and bottom brass,form the entire box within which the shaft rotates.

This class of bearin gs are employed forheavy limited by the depth of the side brasses,) and v their bearings are so small that'the brasses are liable to twist on thisaccount. They can also have but a short space for adjustment, and, lastly, as they must be adjusted by screws which pass through the cap, these must be removed before the cap can be taken off, thus leaving the brasses unsupported, and the set of the shaft may thus be disturbed by the removal of its side supports.

.In my invention the side brasses, D, have flanges E projecting at right angles from the ends, so as to fit the sides of the pillow-block, and thus hold the brasses in'place, as shown. The backs of the brasses are formed in with an incline face, F, extendingfrom end to end of the brass between the flanges. Wedges Gare fitted into the space behind the brasses, lying horizontally and having holes formed in their ends with screw-threads to receive the horizontal screws H, which, when turned, will cause the wedgesto advanceorrecede. Theshanksofthe screws have collars Lwhich fit in spaces between the flanges E of the brasses and a projection, J,

so that when turned the screw will not advance or recede, but will move the wedge. Instead of forming screw-threadsin theendsofthe wedges, as above described, recesses may be made to re ceive nuts which will operate in the same manner. These wedges may be made of considerable length, on account of the width of the box, and they will thus support the brass for so great a distance that it will be very rigid and will,

not twister get out of place. The space for adjustment is much longer, and, finally, as the adjusting screws pass in through the sides and are independent of the cap, the latter may be removed for inspection or other purposes without touching these screws or in any way disturbing the position of the brasses or the set of the shaft, which might otherwiseget out of place.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The improvementin pillow-blocks, consisting of the brasses D, arranged at each horizontal side ofthe journal, and having the horizontally inclined or tapering backs F, in combination with the horizontally-moving wedges G, and the operating-screws H, substantially as and for the purpose set forth.

In witness whereof I have hereunto set my hand.

IRVING M; SCOTT. 

